I wish we'd just get a one off, out of continuity, World's Finest with Bale and Cavill in 2016 or 2015.

2016: Far less big movies to compete with
2015: What could possibly beat The Avengers 2 at the box office (presumably it'll at least make as much as The Avengers)? Batman and Superman on screen together. The two most iconic heroes of all time team up against maybe someone like Bane or Riddler or Joker and Brainiac or Lex or Doomsday.